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Aromatic polycarbonate resin, process for producing the same, optical-part molding material, and optical part

a technology of aromatic polycarbonate resin and production process, applied in the direction of manufacturing tools, instruments, lenses, etc., can solve the problems of poor solvent solubility, inferior moldability, and reduced transparency of molded articles

Inactive Publication Date: 2006-09-26
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to an aromatic polycarbonate resin that can be obtained by reacting specific divalent phenols with a carbonic ester-forming compound. The resin has specific structures that make it different from other polycarbonate resins. The technical effect of this invention is to provide an aromatic polycarbonate resin with improved properties, such as high impact resistance and good flowability. The invention also provides a method for producing the resin and a composition containing the resin.

Problems solved by technology

This aromatic polycarbonate resin in which an adamantane skeleton is introduced into a structural unit of an aromatic polycarbonate polymer chain has a high heat resistance but has the difficulties that it has a poor solubility in solvents because it is liable to be crystallized and it is inferior in a moldability and that the molded article is reduced in a transparency.
In the above engineering plastics, however, a heat resistance and an impact resistance are not satisfactory in, for example, polymethyl methacrylate, and a heat resistance in forming an electrical insulating layer is not necessarily satisfactory in polycarbonate and polyacrylate.
Further, polyethersulfone has the difficulties that it has a high heat resistance but is colored amber and that optical anisotropy is liable to be brought about by slight molecular orientation.

Method used

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  • Aromatic polycarbonate resin, process for producing the same, optical-part molding material, and optical part
  • Aromatic polycarbonate resin, process for producing the same, optical-part molding material, and optical part
  • Aromatic polycarbonate resin, process for producing the same, optical-part molding material, and optical part

Examples

Experimental program
Comparison scheme
Effect test

example i-1

[0088]Methylene chloride 700 ml which was a solvent was added to a solution prepared by dissolving 45 g of 2,2-bis(4-hydroxyphenyl)adamantane and 25 g of 1,1-bis(4-hydroxyphenyl)cyclohexane in 1,360 ml of a potassium hydroxide aqueous solution having a concentration of 2 normal, and phosgene gas was blown into the above solution for 30 minutes in a proportion of 950 ml / minute under cooling while stirring. Then, this reaction liquid was left standing still and separating, and a methylene chloride solution of an oligomer having a polymerization degree of 2 to 5 and having a chloroformate group at a molecular end was obtained in the organic layer.

[0089]Methylene chloride was added to 110 ml of the methylene chloride solution thus obtained to control the whole amount to 150 ml, and then a solution prepared by dissolving 5 g of 1,1-bis(4-hydroxyphenyl)cyclohexane in 50 ml of a potassium hydroxide aqueous solution having a concentration of 2 normal was added thereto. Further, 0.2 g of p-t...

example i-2

[0094]Methylene chloride 700 ml which was a solvent was added to a solution prepared by dissolving 75 g of 2,2-bis(4-hydroxyphenyl)adamantane in 1,360 ml of a potassium hydroxide aqueous solution having a concentration of 2 normal, and phosgene gas was blown into the above solution for 30 minutes in a proportion of 950 ml / minute under cooling while stirring. Then, this reaction liquid was left standing still and separating, and a methylene chloride solution of an oligomer having a polymerization degree of 2 to 5 and having a chloroformate group at a molecular end was obtained in the organic layer.

[0095]Methylene chloride was added to 110 ml of the methylene chloride solution thus obtained to control the whole amount to 150 ml, and then a solution prepared by dissolving 6 g of 9,9-bis(3-methyl-4-hydroxyphenyl)fluorene in 50 ml of a potassium hydroxide aqueous solution having a concentration of 2 normal was added thereto. Further, 0.2 g of p-tert-butylphenol was added thereto as a mol...

example i-3

[0100]Methylene chloride 900 ml which was a solvent was added to a solution prepared by dissolving 170 g of 1,1-bis(4-hydroxyphenyl)cyclohexane in 1,530 ml of a potassium hydroxide aqueous solution having a concentration of 2 normal, and phosgene gas was blown into the above solution for 30 minutes in a proportion of 950 ml / minute under cooling while stirring. Then, this reaction liquid was left standing still and separating, and a methylene chloride solution of an oligomer having a polymerization degree of 2 to 5 and having a chloroformate group at a molecular end was obtained in the organic layer.

[0101]Methylene chloride was added to 110 ml of the methylene chloride solution thus obtained to control the whole amount to 150 ml, and then a solution prepared by dissolving 6 g of 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)adamantane in 50 ml of a potassium hydroxide aqueous solution having a concentration of 2 normal was added thereto. Further, 0.2 g of p-tert-butylphenol was added thereto ...

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Abstract

The present invention relates to an aromatic polycarbonate resin which comprises repetitive units originating in residual groups of a 2,2-bis(4-hydroxyphenyl)adamantane compound and a 1,3-bis(4-hydroxyphenyl)adamantane compound having a substituent on an aromatic ring and which is excellent in a transparency, a heat resistance and a mechanical strength and has a good moldability and a production process for the aromatic polycarbonate resin described above in which the adamantane compounds described above are reacted with a carbonic ester-forming compound. Further, it relates to an aromatic polycarbonate resin which is excellent in an optical characteristic and an optical part prepared by molding the same.

Description

TECHNICAL FIELD[0001]The present invention comprises the first invention, the second invention and the third invention, and the first invention and the second invention relate to an aromatic polycarbonate resin and a production process for the same, more specifically to an aromatic polycarbonate resin which is excellent in a transparency, a heat resistance and a mechanical strength and which has a good moldability and an effective production process for the same. The third invention relates to an optical part-molding material and an optical part, more specifically to an optical part-molding material suited to a molding material for an optical disc substrate such as a digital audio disc, a digital video disc and an optical memory disc, various lenses such as a lens for an optical pickup, spectacle lenses, contact lenses and a lens sheet, an optical sheet substrate such as a prism, a mirror, an optical fiber, a liquid crystal display and a portable key sheet and an optical functional ...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): C08G64/00C08G64/06G11B7/2534
CPCG11B7/2534C08G64/06G02B1/00
Inventor MORISHITA, HIRONOBUTAMURA, HIROYUKIHAMADA, YASUSHI
Owner IDEMITSU KOSAN CO LTD
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